[Bug 280528] [softupdates][mksnap_ffs] mksnap_ffs bombs out on ufs with softupdates enabled

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280528

--- Comment #4 from Kirk McKusick <mckusick@FreeBSD.org> ---
(In reply to Meyser+bugs.freebsd.org from comment #3)
I have been trying to recreate this panic, but have not been able to do so.

When you say
> On Original System I added a new Partition.
> newfs -U /dev/newpartition
> mount
> mksnap_ffs -> kaboo

What is this new partition? Is it a new disk? Is it a partition on a disk?
I have been trying to recreate the issue on a standalone disk and it is working
fine, so I am trying to understand the environment in which you are operating.

The backtrace implies that you are getting faulty data from the disk. Are you
seeing any I/O errors from the backing store in /var/log/messages?

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